The 29-year-old heiress was detained on suspicion of possession of marijuana Friday, but the charges were dropped after she appeared in a courtroom, Reuters reported.
"Paris Hilton was questioned today by police in South Africa on allegations of smoking marijuana. However I can confirm that the incident was a complete misunderstanding and it was actually another person in the group who did it," said Dawn Miller, Hilton's rep. "The case has been dropped against Paris and no charges will be made. The authorities have apologized for wrongfully accusing her since she had nothing to do with the incident."
She was detained outside the Nelson Mandela Bay Stadium after the 2010 FIFA World Cup quarterfinal match between Brazil and Netherlands.
Hilton's friend, Jennifer Rovero, was arrested and sentenced to a fine of $130 or 30 days in prison for smoking a marijuana joint. A lawyer for the self-described model-actress told the court she was in South Africa to cover the World Cup as a freelance photographer, according to Reuters.
"They were together, but we didn't have a case against Hilton. The joint was in Rovero's possession, not Hilton's," the prosecutor told Reuters.
Hilton spent 23 days in jail in 2007 after pleading no contest to alcohol-related reckless driving.